Car-truck center bearing



Oct. 28,1930. 3 w wlEGAND 1,780,103-

GAR TRUCK CENTER BEARING Filed June '5, 1929 Patented Oct. 28, 1930PATENT OFT-Ice GEORGE w. WIEGANI), or DUBUQUE, IOWA CAR-TRUCK CENTERBEARING,

Application filed June 3, 1929. Serial No. 368,131.

This invention relates to new and useful improvements in bearings andparticularly to bearings for the trucksof street and railway cars, andthe like;

One object is to provide a device of this character which is simple inconstruction, and which can be easily and quickly applied to the bodyand truck of a street car or railway car. I

Another object is to provide a center hearing device for a car whichreadily permits the complete removal of the truck, upon jacking up thecar body, after-having removed'a single part of the device.

, Another object is to provide a device of this character which readilypermits the reversal of the truck, without disconnecting the same fromthe car, or withdrawing the truck from beneaththe car.

Another object resides in the particular form of the bearing members,and the plates supporting them, whereby accidental disconnection isprevented, and wherein escape of dirt and water may be readilypermitted.

Other objects and advantages will be apparent from the followingdescription when taken in connection with the accompanying drawing.

In the drawing: 1

Figure 1 is a vertical sectional view throughthe invention and theassociated portions of the car body and the truck thereof;

Figure 2 is a horizontal sectional view on the line 22 of Figure 1.

Referring particularly to the accompanying drawing, 10 represents aportion of a railway car body, and 11 represents a portion of one of thewheeled trucks thereof, in connection with which the present inventionis particularly adapted for use.

' Secured to the center of the upper face of the truck 11 is a plate-12having a central opening 13 therein, surrounded by an upwardly extendingflange lt. In outwardly spaced, concentric relation to the flange-14:,is a second flange 15. The intervening space,

. between the flanges, inclines downwardly and outwardly toward theflange 15, and disposed on this inclined floor, designated by thenumerall 6, is a circular series of bearing rollers 17, each beingconical I111 shape, with their apexes directed toward the inner flange 11,

and their bases, or larger ends, directed toward the outer flange 15;Formed in the cen ter of the floor 16, in concentricrelation to theflanges land 15, is a groove l 8, within which the circumferentialrings, 19, of the rollers 17, run. 1 i i g V Secured to the bottom faceof the car body is a plate 20,0f s'imilarconstruction to the plate 12,except that,instead of the central opening 13, there is cast integrallywith the center of the lower face of the plate, a do:

vpending stem or stud 21, and formed trans versely in the lower end ofsaid stud is an opening 22 for the reception of the retaining pin or keybar 23. This stud, as clearly seen in Figure 1, passes downwardlythrough the central-opening 13 of the plate 12, and the key 23 passesthroughithe opening 22, be-

neath the said plate, whereby the plates are properly held together, butpermitted to rotate relatively to each other. To maintain the key 28 inproper position in the opening of the stud, split pins or keys 23 aredisposed through openings in theends of said key 28.

In the lower face of the plate 20 there is formed a-circular channel 24,similar to the channel in the plate 12, with the bottom wall 25 inclinedcorrespondingly with the floor of the other channel, and having formedin the center thereof the similar groove 26, receiving the ribs 19 ofthe bearing rollers 17. Formed in the lower side of the floor 16, at aplurality of points, are the openings 27,

which lead out throughthe outer edge of the plate 12,'whereby to permitdirt and water to readily escape from the bearing channel;

To remove the truck from the car, it is only necessary to jack up thecar body, to a sufficient height to withdraw the stud 21 a from theopening 13, after the split pins 23 before, without removing the key 23,until the wheels of the truck are clear of the rails, when the operatorrotates the truck, as suspended on the stud 21, until the truck has eencompletely reversed, after which the car body is lowered, to permit thetruck to seat on the rails.

What is claimed is:

A car truck center bearing including upper and lower plates, the upperplate having a central depending stub shaft provided with a transverseopening and a circular channel which inclines upwardly and outwardlywith a. circular groove in the upper wall thereof, the lower platehaving a central opening receiving said stub shaft therethrough andhaving a. circular channel in its upper face with a circular groove inits bottom wall, said bottom plate having a recess surroundingsaidopening, a retaining pin in the opening of the shaft, and taperedrollers in the grooves each having a rib engaged in said grooves.

In testimony whereof, I aflix my signature.

GEORGE W. lVIEGAND.

